Return back to Cabot house and Jack will be upset that you set Lorenzo free, but then you can tell him that you killed Lorenzo and that you are sorry that you did so.Lorenzo does have a lot of health so it will take some time to kill him if you don't feel like wasting explosives or high-damage ammo on him. Lorenzo's gun is a low damage pipe pistol that doesn't do very much damage. His 'force push' doesn't do a lot of damage if your damage resistance is over 115 or so but it does stagger you and it prevents you from aiming properly for a moment. Just stay out of his melee and 'force push' range and shoot him until he dies. Then you can engage and kill him pretty easily.

Once he is out you can speak with him to find out what he intends to do.

You can activate up to 3 switches and still open the door of Lorenzo's cell to let him out.

If you want to kill Lorenzo after freeing him you can follow the following steps. If you choose to kill the Cabots, you can optionally convince Edward to help you with this. You can either choose to help Jack kill Lorenzo or help Lorenzo kill the rest of the Cabots.

if you choose not to kill Lorenzo right then and there, head back to their house, and Jack confronts you about why you let Lorenzo escape. If you decide to let Lorenzo out, Jack runs away, and Lorenzo tells you to meet him back at their house. If you decide to kill Lorenzo with the 4 switches, talk to Jack to complete the quest. You'll also find Massachusetts Surgical Journal - Let's Play Doctor inside Lorenzo's cell. Lorenzo tries to convince you to help him escape rather than Kill him.ДЄt this point you can help him escape, kill him following Jacks instructions or you can help Lorenzo escape and then engage him and kill him. You will then need to find an alternative way to the lower levels to where Lorenzo is being held.

Kill or free lorenzo cabot fallout 4